Search U.S. government technical reports digitized or harvested by TRAIL.
Portable methane-detecting appliances approved under United States Bureau of Mines standard
Methane emission from U.S. coal mines :a survey
An in-situ diffusion parameter for the Pittsburgh and Pocahontas No. 3 coalbeds
Methane control by isolation of a major coal panel :Pittsburgh coalbed
The composition of coalbed gas
Direct method determination of the gas content of coal : procedures and results
Assessing the methane hazard of gassy coals in storage silos
Determining face methane-liberation patterns during longwall mining
Method factors for anemometer measurement at pipe outlets
Effect of shearer web depth on dust generation and methane liberation